无忧20200216题目: 已知:
1. one gho => one esd
2. one wim => one esd
3. two esd => one esd
(=> means convert, one,two == single,double)
--------------------------------
求 two gho ???one esd
解:
由1知, one gho => one esd
再来一波,one gho => one esd
two esd出来了,
由3. two esd=> one esd